Re: [PATCH v2 0/3] Add support and enable the debug UART in the Pixel 3a and Pixel 3a XL

[Bjorn Andersson]

On Sat, Mar 28, 2026 at 11:58:39PM +0100, Pablo Correa Gómez via B4 Relay wrote:
> In order to get logs through the SBU pins in Google Pixel devices, it is
> necessary to add support to the devicetree, and enable the corresponding
> UART. With this code and an USB-Cereal board, I was able to get full kernel
> logs through serial.
> 
> This series depends on the patch adding a sdm670-google-common dtsi for
> dealing with both the Pixel 3a and Pixel 3a XL:
> https://lore.kernel.org/all/20260310002606.16413-5-mailingradian@xxxxxxxxx/

Please resubmit when this dependency has been accepted, or perhaps work
together with Richard to send the two series together, if possible.

> 
> This is my first patch sent to the kernel mailing list, so apologies ahead
> if I missed something in the documentation.
> 

Once the patches are applied, the "Depends on" statement in patch 3
doesn't carry any value, so please drop that.

Other than that, I think this looks good.

Thank,
Bjorn

> Signed-off-by: Pablo Correa Gómez <pabloyoyoista@xxxxxxxxxxxxxxxx>
> ---
> Changes in v2:
> - Fix typo in (3/3) commit message
> - Link to v1: https://patch.msgid.link/20260328-pabloyoyoista-debug-uart-on-rdacayan-next-v1-0-0babf584acdb@xxxxxxxxxxxxxxxx
> 
> ---
> Pablo Correa Gómez (3):
>       arm64: dts: qcom: sdm670: add default uart pinctrl nodes
>       arm64: dts: qcom: sdm670: add debug uart soc node
>       arm64: dts: qcom: sdm670-google-common: enable debug uart
> 
>  arch/arm64/boot/dts/qcom/sdm670-google-common.dtsi |  18 +-
>  arch/arm64/boot/dts/qcom/sdm670.dtsi               | 207 +++++++++++++++++++++
>  2 files changed, 224 insertions(+), 1 deletion(-)
> ---
> base-commit: 54f966f63b379d0c62bb044b7903319776443a4a
> change-id: 20260328-pabloyoyoista-debug-uart-on-rdacayan-next-69274358cef4
> prerequisite-message-id: <20260217002738.133534-1-mailingradian@xxxxxxxxx>
> prerequisite-patch-id: aeaea0c438bff770d0c4c33d937db5706d642daf
> prerequisite-patch-id: 11ce654ef61d48fdebf1c4e1d9d184cfb7bcaa59
> prerequisite-patch-id: c6203c8a71fe103b983b6ba5fc99a22948118fb4
> prerequisite-patch-id: f9ff17c7e4b4396850f51e45249d2f6e35df3725
> prerequisite-patch-id: faab09f9fe421a6358e5512c6050dd70d3271273
> prerequisite-patch-id: adb88e3ddcbe33db1e3fc60ea4cb195dac18a8b4
> prerequisite-patch-id: 0c8f7fc0835cdda72529fcfa7b654bb97109fae4
> prerequisite-message-id: <20260310002606.16413-1-mailingradian@xxxxxxxxx>
> prerequisite-patch-id: eb2d2be6edae3d09973b49f3ff6c48fa0845e7e0
> prerequisite-patch-id: e6d9e56eaeceddee68d56e2ec8ac20997bff52c9
> prerequisite-patch-id: d5e2975adf904bf656827100df7989218ac9e963
> prerequisite-patch-id: 04478351b1304dfe1357d176c8d0c235346ca40f
> prerequisite-patch-id: a54db56ccdf1491c46158a84ac1cae70f74bb36c
> 
> Best regards,
> --  
> Pablo Correa Gómez <pabloyoyoista@xxxxxxxxxxxxxxxx>
> 
>